go to minecraft launcher>press options> press force update> press done> press the launch button.
No unless you have an corrupted file
The saves folder is in a hidden folder in application data called .minecraft. The directory to the folder is: My documents/Application Data/.minecraft. There is a folder in .minecraft called saves which contains your saved worlds. If this folder does not exist, then perhaps you have not yet played any worlds on that computer or somebody has deleted the folder.
A folder called .minecraft
If they've all been removed because you completely removed Minecraft from your computer and deleted the minecraft folder, then there's no way to get them back unless you have a backup of the minecraft folder saved somewhere else. If you have a backup just copy the texturepacks folder across. Sorry though, there's no way I know of to get your servers back.
Have you installed ModLoader and/or deleted the META-INF folder in the minecraft.jar.
Locate your Minecraft folder, then find your save file. Copy and paste this onto your hard drive. Minecraft is installed in your AppData folder (C:\Users\[username]\AppData\.minecraft\) The saves folder should be in the .minecraft folder.
They go to the screenshots folder in the .minecraft folder. Click "Start" and search for "Run". Type in %appdata% and press enter. Find the .minecraft folder and look for the screenshots folder.
Congrats i actually face-palmed..the minecraft folder is where all files necessary to run minecraft are located while the launcher isn't located in this folder.Directory to the .minecraft folderC:\Users\(user name)\AppData\Roaming\.minecraft
if you log in to minecraft again it will resave minecraft follders you are missing!
The Minecraft Launcher is 263 KB while the Minecraft folder is approximately 46 MB.
Delete the minecraft.jar file in the BIN folder in the .minecraft folder. Then run Minecraft again. It should download the most recent version.
There is a Minecraft folder, but it is hidden in your hard drive. (That pesky file).Open your start menu on your computerSearch %appdata%Open the .minecraft folder that appearsOpen the bin folderDelete the minecraft.jar fileOpen Minecraft again. It should be fixed.